Vulnerability Description
OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated patient portal user to retrieve the drawn signature image of any staff member by supplying an arbitrary `user` value in the POST body. The companion write endpoint (`save-signature.php`) was already hardened against this same issue, but the read endpoint was not updated to match. Version 8.0.0.3 patches the issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Emr | Openemr | < 8.0.0.3 |
Related Weaknesses (CWE)
References
- https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4Patch
- https://github.com/openemr/openemr/releases/tag/v8_0_0_3Product
- https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657qExploitVendor Advisory
FAQ
What is CVE-2026-33934?
CVE-2026-33934 is a vulnerability with a CVSS score of 4.3 (MEDIUM). OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature...
How severe is CVE-2026-33934?
CVE-2026-33934 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33934?
Check the references section above for vendor advisories and patch information. Affected products include: Open-Emr Openemr.